Governor drive mechanism



Patented Apr. 27, 1920.

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GOVERNOR DRIVE MECHANISM- APPLICATION FILED 050.9. 1916.

Patented A r. 27, 1920.

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GOVERNOR DRIVE MECHANISM. APPLICATION FILED DEC. 9. I916.

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SJ nvewfo'e 77404022 202: lan L A aflo'vne 1a THEODORE DOUGLAS, 01 SGARBORO, NEW YORK, ASSIGNOR TO THE DUPLEX ENGINE- GOVERNOR COMPANY, INC., A CORPORATION OF NEW YORK.

GOVERNOR DRIVE MECHANISM.

Application filed December 9, 1916.

To all whom it may concern.-

lie it known that I, THEODORE DOUGLAS, a citizen of the United States, residing at Scarboro, county of Westchester, and State of New York, have invented certain new and useful Improvements in Governor Drive Mechanlsm, ofwlnch the IOllOWlIlg is a specification.

My invention relates to an improved driving mechanism for the governors of internal combustion engines; and. it comprises both transmission devices for imparting motion to the governor from a driven part of the engine, and a housing which is adapted not only to inclose and protect the transmission devices, but also to facilitate the ready and easy mounting of the driving mechanism upon the framework of an engine in position for efiicient operation.

The objects and advantages of my invention, together with the preferred construction in which I embody same, are fully set forth in the following description; and the novel features of my invention are defined in the appended claims. But the embodiment of my invention actually shown here in is to be taken as illustrative only; and I may of course vary the structural details thereof, without departing from the scope and spirit of my invention; as indicated by the terms in which the claims are expressed and the variations in the wording of the same.

0n the drawings:

Figure 1 is an elevation, partly in section; showing a complete governor driving mechanism made according to my invention;

Fig. 2 is as'ectiontaken in a plane indicated by the line 22 on Fig. 1;

Fig. 3 is a sectional view taken in a plane indicated by the line 8-3 on Fig. 2, and illustrating a part of the engine framework to show how the driving mechanism is connected to the engine; to be'driven, for example, by the cam-shaft thereof.

Fig. 4 is a side view showing how my driving mechanism is applied'to an internal combustion engine; with the governor and the cam-shaft onthe same side of the engine and Fig. 5 1s a front view of an engine w1th my governor mechanism in use thereon; but having the governor casing on one side of Specification of Letters Patent. Patented Apr, 27, 1920,

Serial No. 135,962.

' the engine and the cam-shaft for operating 'bureter 2; connected to the cylinders ofthe motor by a fuel supply pipe 3, which communicates with an intake manifold 4. At 5 is indicated a governor casing, which is inserted in the line of the pipe or conduit 3; and this casing incloses a centrifugal governor connected to a throttle valve of the grid type; as shown diagrammatically on Fig. 4; this valve having openings which are adapted to register with openin s in a seat to permit the fuel supply to flow to the engine; and to be moved out of registry with the openings in the seat when the speed of the engine becomes excessive, so as to interrupt the fuel supply and cause the engine to slow down. The governor is driven from the cam-shaft of the engine;

ernor casing 5. The lower casting 8 has a conical projection 11, surrounded. by a flange 12; and beyond this flange 12 is a cylindrical extension 13, (Fig. 1) which is adapted to fit into a circular boss 14: on the framework of the engine; for the purpose of enabling the housing to be mounted. The end of the tubular casing 10, remote from the casting 7, receives a threaded bearing piece 15, having a boss 16, as illustrated in Fig. 1; and this boss is intended for insertion into the adjacent end of the governor casing 5, and thus serves as means for connecting the casing 5 and the casing 10 together.

By examining Figs. 2 and 3, one can see that the castings 7 and 8 each embody a pair of bearings, 17 and 18, which are arranged at an angle with each other. These bearings extend from the inside of the casting, both of which are hollow, to the outside of the same; and the bearings 17 terminate on the exterior of the casting in threaded bosses 19. By means of these threaded bosses the castings 7 and 8 can be connected by the tubular casing 9, so that the bearings 17 will be in alinement with each other; since the tubular casing 9 is threaded internally on both ends and can be attached to the castings 7 and 8 simply by screwing it upon the bosses 19. The bearing 18 of the casting 7 also terminates on the exterior of the casing in a threaded boss 19, over which is screwed the casing 10; but the bearing 18 of the casting 8 terminates outside this casting in the conical projection 11 above referred to, and is concentric with the same.

I have provided both castings with openings in alinement with the bearings; and to these openings are fitted imperforate removable closures, which afford ready access to the interior. In the upper casting the opening in line with the bearing 17 is provided with a closure in the form of a threaded 'cap 20, having a milled edge; while the openings in line with the bearing 18 in the casting 7 and both bearings in the casting 8 are provided with closures in the form of externally threaded nuts 21, having recesses to enable them to be en gaged and turned by a tool.

Each. of the two bearings in the castings 7 and 8 receives a short shaft 22 having a collar to engage a shoulder at the outer end of the bearing; and carrying inside of the casting a gear 23. The gears 23 are spiral gears and each has a hub, through which is passed a pin 24; by which these gears are secured to their respective shafts 22. Each gear will have one face abutting the inner end of the bearing for its shaft 22; and as each gear is rigid with its shaft, the gear and the collar on the outer end of the shaft will in each case hold the shaft against axial movement, and thus eliminate end play of the shafts and the gears in the castings. Therefore the two gears in each of the castings 7 and 8 will always remain properly in mesh and will operate to the best advantage. 'As shown in the drawings, the bearings 17 and 18 for each casting are at right angles to each other; but under some conditions this angle may conceivably be greater or less than a right angle, and I do not wish to be necessarily restricted to a right angle in practice.

The short shafts 22 each have a square bore 25, which extends inward from the outer .end of each shaft and terminates near the opposite end thereof. Into these square bores of the shafts 22 mounted in the bores 17 of the two castings, and the shaft 22 mounted in the bearing 18 of the upper casting, are inserted the ends of sec- 23 in the lower casting can transmit mo-v tion to the gears in the upper casting, and

the gears in the upper casting can transmit motion to the governor. The short shaft 22 in the bearing 18 of the casting 8 receives a square stud 26, which terminates outside of the bearing and within the conical projection 11 in a flattened head 27 that enters a transverse recess 28 at the end of the cam-shaft 29. This cam-shaft, as indicated on Fig. 3 has a bearing 30, which is coaxial with the boss 13 on the framework of the engine 1.

From the above description it will be clear that rotation of the camshaft 29 will turn the shaft 22 in the bearing 18 of the casting 8, and thus revolve the spiral gear 23 'on said shaft. This gear willturn the other gear in the casting 8; and thus re- 'volve the short shaft 22 in the bearing 17.

Through the flexible sha'fting in the tubular casing 9, rotation will be imparted to the gear 23 on the shaft 22in the bearing 17 of the upper casting; and thence to the other gear 23 and shaft 22 in the adjacent bearing 18. In this way the flexible shafting in the casing 10 will be rotated, and

motion transmitted to' the governor in the casing 5. r

The flexible shafting 1n the caslngs 9 and 10 is indicated by the numeral 31. Each of straight throughout the length of each of the casings. V c

The flange 12 is provided with a number of openings 34: through which are passed screws 35, engaging threaded bores in the boss 1 1 to hold the lower casting fast to the framework of the engine 1. I also may provide additional support for the housing 6 in the form of an arm or bracket 36, which has at one end a ring 37 adapted to fit against the end of the boss 14; and between the same and the flange 12; and provided with openings to give passage to'the screws 35; wherebythese screws hold both the casting 8 and the arm 36. Above the boss 14 the arm 36 has divided portions 38, each of which terminates in a half bearing engaging the casing 9; and these portions can be forced toward each other by means of a screw 39 which passes through open} ings in both, one opening being threaded;

In order to strengthen this arm the same may be provided with a peripheral rib 40.

In Fig. 4 the housing 6 is shown applied to an engine with the cam shaft on the same side as the governor; and in such position with respect to the governor that the casing 9 is vertical and the casing 10 horizontal. On the other hand, Fig. 5 shows an engine having the cam-shaft on the side opposite that where the governor is located; with the housing in such position that the casing 9 extends across the end of the engine at an incline. The housing can be mounted in almost any position, on either side and at either end of the engine, according to the location of the holes 34 in the flange 12, and the threaded bores for the screws 35 in the boss 14. These holes and bores are always placed at the points required by the position which the housing is to occupy; and the casing 10 will always be in a horizontal position so as to extend from the casting 7 to the governor casing 5. By fitting the section 13 into the boss 14 and rotating the casing 9, this casing and the casting 8 can be adjusted until they occupy the position required, and the casting 7 can likewise be adjusted around the outer end of the casing 9, so as to bring it into. position to be joined to the overnor casing by the tubular casing 10. 6f course when the correct position of the casting 8 and casing 9 is once ascertained, the holes 34 and bores in the boss 13 are located accordingly; since the bores must be so placed that, when the holes 34 register with them, the casing 9 will be at the required angle.

My governor driving mechanism can be utilized on engines of almost any type, and the length of the casings 9 and 10 can always be varied as the dimensions and relative locations of the parts of the engine necessitate. The bosses 19 of the two bearings of the casting 7 and the bearing 17 of the casting 8 are provided with shoulders or seats at their inner ends to be engaged by the ends of the casings 9 and 10, if required; or the casings may not extend into direct contact with the seats if the mounting and fitting of the housing to an engine does not so permit; as shown at the top of Figs. 1, 2 and 3. The casing 9 serves not only to inclose the shaft 31 therein, but also as means for connecting the castings 7 and 8; and both casings 9 and 10, as explained herein are in alinement with the bearings to which they are joined by the bosses 19. Further, the casting 7, besides containing the gears 23, serves as means for adjustably connecting the two tubular casings with their axes in transverse relation at the desired angle; while the casting 8 also acts as means for adjustably connecting the casing 9 to the engine framework 1. The part 15, though acting also as a bearing for -bores of the same.

the squared ends of the studs 32 are slidable in the bores 25 of the gear shafts 22. These shafts may therefore be designated floating shafts. Hence, when the housing 6 is mounted, and the castings and tubular casings are adjusted to get them into proper relative positions, the shafts 32 retain their operativeconnection with the gear shafts, and never lose their engagement with the The elements 33 preserve the straightness and alinement of the shafts 31 and prevent whipping and wearing when in rotation.

It should also be noted that the distances between the axes of the shafts 22 and in the castings 7 and S are equal, this distance, for instance, amounting to 1 inch. By means of different gears which will always be of such relative sizes as to be one inchapart between centers, when in mesh, I am enabled to use thesame, or a different combination of gears interchangeably in either casting These gears are in the present instance 20 pitch, 45 degree angle, spirals. They may be out right-hand or left-hand to give the direction of rotation desired, thus adapting the mechanism to any required rotation. V

In the present instance, the gears 23 may be used in pairs of 11 and 17 teeth; 12 and 16 teeth; 13 and 15 teeth; 14 and 14 teeth; and one of these pairs in either casting may be used with any of the other pairs in the other casting. These gears will be of such size that, though their individual radii may vary, the sum of the radii of the gears of any pair meshing with each other in either casting will be the same as the distance between the axes of the shafts 22 in that casting. By employing these four pairs of gears in various combinations in both the upper and lower castings, more than fortythree different speed ratios may be secured. Hence, I can obtain the proper governor speed from whatever engine speed may be specified.

My governor drive mechanism has many important advantages, apart from simplicity, durability, 'cheapness and strength, among which may be enumerated: angular adaptability to meet approximately any relative shaft and governor locations; speed adaptability, to give almost any desired speed ratio; and rotative adaptability, to give any direction of rotation that may be required.

Having described my invention, what I believe to be new and desire to secure and protect by Letters Patent of the United States is 1. Driving mechanism for a governor to control an engine, said mechanism comprising a housingincluding a pair of tubular casings connected to each other at an angle,

means for securing one of said casings to the governor, and means for adjustably conto said governor, adjustable means for con'-,

necting the other casing to the framework of the engine controlled by said governor, and a bracket secured to said engine and engaging said other casing.

4:. Driving mechanism for a governor comprising a pair of castings, each having a pair of angularly disposed bearings, the bearings of each'castingeach containing a short shaft having a gear thereon, the gears of each casting meshing with each other, means for connecting said castings with a bearing of one in alinement with a bearing of the other, a floating shaft connecting the short shafts in said alined bearings, and means for connecting the other short shaft of one casting to saidv an angle, means for connecting one of said casings to said governor, means for adjustably connecting the other casing to the framework of the engine driving sald governor, at a point adjacent a shaftof said engine, and transmission devices in said hous ing for enabling, said shaft to operate the governor. V

6. The combination with. the framework of an internal combustion engine having a governor to regulate the same, of means comprising a casing adjacent one end of said framework and a casing joined to the first-casing and extending longitudinally of said framework, said casings being adapted to inclose devices to transmit; motion from the engine to the governor, and a bracket comprising a housing including a pair of. tubular casings connected to'each other at an angle, meansfor connecting one of said casings to the governor, adjustable means for connecting the other casing to the framework of an engine controlled by said governor, and a bracket comprising a ring se cured to the framework of said engine between the same and said adjustable means, and an arm extending from said :ring and having means for engaging said other casing. r

10. Driving mechanism for a governor to control an engine, said mechanism comprising a housing including a pair of tubular casings connected-to each other at an angle, means for securing one of said casings to the governor, means for adjustably connecting the other casing to the framework of the engine controlled by said governor, and changeable transmission devices in said housing for operating the governor.

Intestimony whereof, I have'signed my name to this specification this 25th'day of November, 1916.

THEODORE DOUGLAS. 

